# Eraser vs Free Blocks

Eraser records 534,396 monthly visits with -23.6% month-over-month growth and Freemium, Paid, Contact for Pricing pricing. Free Blocks records 0 monthly visits with 0% growth and Freemium pricing.

| Metric | [Eraser](https://openaitools.app/tool/eraser) | [Free Blocks](https://openaitools.app/tool/free-blocks) |
| :--- | :--- | :--- |
| Website URL | https://www.eraser.io | https://freeblocksapp.com |
| Categories | AI Diagram Generator, AI Copilot, AI Design Generator, AI Documents Generator | AI Schedule Maker, AI Calendar, AI Scheduling, AI Meeting Assistant |
| Pricing Model | Freemium, Paid, Contact for Pricing | Freemium |
| Monthly Visits | 534,396 | 0 |
| MoM Growth Rate | -23.6% | 0% |
| Primary Market | India | Global |
| Direct Visits | 267,661 | 0 |
| Review Score | 4.6 | 4 |
| Saved Count | 3 | 1 |
| Supported Platforms | Website | Website |

## Eraser

Eraser is a technical design platform aimed at the people who document architecture: enterprise architects, DevOps and platform engineers, consultants, and software teams. The core promise is speed without sloppiness, so instead of dragging boxes for hours you describe the system or point Eraser at a source of truth such as code, a cloud account, a CMDB, or a spreadsheet, and it produces a diagram that already follows sensible layout rules.

Beyond static images, Eraser supports interactive maps that zoom from a company-wide view down into a single service, guided explainers that walk teammates through a system, and AI documents for design docs and technical documentation. Team governance features such as shared style presets, naming rules, and reference architectures keep output consistent as more people create diagrams. An open-source agent toolkit and MCP server let tools like Claude, Cursor, and ChatGPT create, search, and export diagrams programmatically.

Prices are organized in tiers that include a free entry point, paid plans, and enterprise agreements, with multi-tenant, single-tenant, and self-hosted deployment options for larger organizations. Security posture includes SOC 2 Type 2 certification and SAML SSO.

**Pricing & Plans:** Freemium with paid plans and custom enterprise pricing. A free tier and free tools such as DiagramGPT are available, while paid individual and team plans plus enterprise agreements cover advanced governance, security, and deployment options; check the pricing page for current rates.

- **AI diagram generation:** Generate architecture diagrams, flowcharts, sequence diagrams, and BPMN from a text prompt, code, Terraform, or an uploaded PDF, Word, Excel, PowerPoint, Draw.io, or Visio file.
- **Maps from live systems:** Build interactive maps that sync with cloud accounts, repositories, and internal catalogs so the picture stays close to the real environment, with drill-down from org level to a single container.
- **Diagram-as-code integrations:** Paste code or connect private and public Git repositories, Confluence, Notion, VS Code, and GitHub to keep diagrams grounded in actual implementation.
- **Open-source agent toolkit and MCP server:** Run the agent toolkit in your own infrastructure under an MIT license and let MCP-compatible clients create, search, update, and export diagrams with OAuth or API tokens.
- **Team style governance:** Apply presets, naming and notation rules, and reference architectures so every teammate's diagram ships on-brand and consistent.

**Strengths:** Turns prompts, code, and files into properly laid-out diagrams instead of raw box-and-arrow output; Interactive maps and explainers make complex systems understandable to non-architects; MCP server and open-source toolkit fit agent-driven and self-hosted workflows; Enterprise controls such as SSO, SAML, and SOC 2 Type 2 certification

**Limitations:** Heaviest value comes with team and governance features that need setup; Advanced mapping and self-hosted deployment are aimed at larger organizations rather than solo users

[Profile (Markdown)](https://openaitools.app/tool/eraser.md)

## Free Blocks

Free Blocks tackles the tedious part of meeting planning: telling other people when you are free. Instead of writing out time ranges by hand, you connect your primary Google Calendar and Free Blocks reads your busy periods, then generates a tidy availability table you can paste into an email or share as a personal booking page. It reads the tone of the product well — the company describes it as a way to compose emails with beautiful tables that show when you are free, and it can also block off whole days when you know you are unavailable.

Beyond the core calendar sharing, Free Blocks ships as a small ecosystem: a personal booking page, a Google Workspace app available in the Workspace Marketplace, a Chrome extension and a Slack app. That means teammates and clients can see openings and grab a time without leaving the tools they already use, which is the main reason teams choose it over heavier scheduling suites.

The product positions itself as simple and approachable, targeting individuals, small teams and anyone who coordinates meetings across companies. There is a free tier — the company markets it heavily with "try us out, it's completely free" — and a pricing page plus a contact-sales path for larger or team deployments. If you already live in Google Calendar and Slack, the value is mostly in removing friction rather than in advanced routing, round-robin or complex meeting-type logic.

**Pricing & Plans:** Free plan available (the site promotes a completely free tier for individual use). A pricing page and a contact-sales option exist for team or business needs; check the site for current plan details and limits.

- **Google Calendar availability sync:** Connects to your primary Google Calendar to detect busy periods and generate accurate free-time blocks automatically.
- **Personal booking page:** Publish a link where clients and colleagues can see your openings and book a slot themselves, removing email back-and-forth.
- **Slack and Google Workspace apps:** Share availability and schedule from inside Slack, Gmail and the Google Workspace Marketplace without switching tools.
- **Chrome extension:** Grab your availability blocks while browsing and drop them straight into an email or message.
- **Full-day blocking:** Mark entire days as unavailable so only genuinely open time is offered when you build an availability table.

**Strengths:** Direct Google Calendar and Gmail integration with no extra service to sign up for; Free tier makes it low-risk to adopt for individual use; Apps for Slack, Chrome and Google Workspace meet people where they work; Simple, approachable flow for people who dislike complex scheduling suites

**Limitations:** Primarily Google-centric — Microsoft 365 or Outlook users get little benefit; Fewer advanced features than dedicated scheduling platforms (routing, complex meeting types); Team and business pricing details require contacting sales

[Profile (Markdown)](https://openaitools.app/tool/free-blocks.md)

## Frequently Asked Questions

### How do Eraser and Free Blocks compare in monthly traffic?

Eraser has 534,396 monthly visits, while Free Blocks has 0. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Eraser has a month-over-month growth rate of -23.6%; Free Blocks has 0%.

### How does pricing compare?

Eraser: Freemium, Paid, Contact for Pricing. Freemium with paid plans and custom enterprise pricing. A free tier and free tools such as DiagramGPT are available, while paid individual and team plans plus enterprise agreements cover advanced governance, security, and deployment options; check the pricing page for current rates. Free Blocks: Freemium. Free plan available (the site promotes a completely free tier for individual use). A pricing page and a contact-sales option exist for team or business needs; check the site for current plan details and limits.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Miro](https://openaitools.app/tool/miro) | 30,749,206 | +1.7% | Freemium, Contact for Pricing | Offers an expansive infinite canvas for team brainstorming and visual workshops, but lacks Eraser's code-to-diagram automation. | [.md](https://openaitools.app/tool/miro.md) |
| 2 | [Napkin AI](https://openaitools.app/tool/napkin) | 1,029,978 | -17.5% | Freemium | Automatically embeds visual diagrams directly inside text documents, though it lacks Eraser's specialized cloud architecture focus. | [.md](https://openaitools.app/tool/napkin.md) |
| 3 | [Reclaim AI](https://openaitools.app/tool/reclaim-ai) | 735,853 | -1.7% | Freemium, Free Trial | AI calendar that defends your focus time and schedules work automatically | [.md](https://openaitools.app/tool/reclaim-ai.md) |
| 4 | [Motion](https://openaitools.app/tool/usemotion-com) | 511,886 | -15.5% | Free Trial, Paid | The AI super app for work — tasks, projects, calendar and meetings in one place | [.md](https://openaitools.app/tool/usemotion-com.md) |
| 5 | [EdrawMax](https://openaitools.app/tool/edrawmax-com) | 301,707 | -6.5% | Paid | Provides extensive drag-and-drop shapes and templates for general diagrams, but weaker automated code-to-diagram capabilities than Eraser. | [.md](https://openaitools.app/tool/edrawmax-com.md) |
| 6 | [Morgen](https://openaitools.app/tool/morgen) | 261,722 | -10.6% | Free Trial, Paid | AI daily planner that turns your calendars and tasks into one clear plan | [.md](https://openaitools.app/tool/morgen.md) |
| 7 | [Cloudairy](https://openaitools.app/tool/cloudairy) | 179,162 | -13% | Freemium, Contact for Pricing | Combines team whiteboarding, documentation, and diagramming in one platform, but less tailored for automated codebase architecture. | [.md](https://openaitools.app/tool/cloudairy.md) |
| 8 | [Akiflow](https://openaitools.app/tool/akiflow) | 175,987 | -21.7% | Free Trial, Paid | Tasks, calendar and an AI sidekick in one time-blocking planner | [.md](https://openaitools.app/tool/akiflow.md) |
| 9 | [FlowSavvy](https://openaitools.app/tool/flowsavvy) | 82,220 | +19.5% | Freemium | AI calendar that auto-schedules your tasks and re-plans when life changes | [.md](https://openaitools.app/tool/flowsavvy.md) |
| 10 | [ChartDB](https://openaitools.app/tool/chartdb) | 49,523 | -33.4% | Freemium | Open-source tool specifically tailored for database schema visualization and ER diagrams, but lacks general system documentation features. | [.md](https://openaitools.app/tool/chartdb.md) |

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Source: https://openaitools.app/compare/eraser-vs-free-blocks

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